pin-number

Creating a unique id (pin number) for each record of a table

I want to create a pin number that is unique within a table but not incremental to make it harder for people to guess. Ideally I'd like to be able to create this within SQL Server but I can do it via ASP.Net if needed. Thanks, Josh EDIT Sorry if I wasn't clear - I'm not looking for a GUID as all I need is a unique id for that table - ...

Activate Upon Scanning?

I'm not sure if this is where I need to be asking this question, but here it is. My company is preparing to release a software program in the format of PIN cards (similar to phone cards). Each card will have a PIN on it under a scratch panel. The PIN can then be used to download the software program from our website. I need to figure o...